diff --git a/.github/workflows/test-all.yml b/.github/workflows/test-all.yml
index aa7dfeb4b..44fe4c4d8 100644
--- a/.github/workflows/test-all.yml
+++ b/.github/workflows/test-all.yml
@@ -72,6 +72,7 @@ jobs:
     runs-on: ubuntu-20.04
     outputs:
       matrix: ${{ steps.get-names.outputs.matrix }}
+      artifact: ${{ steps.get-artifact-name.outputs.artifact }}
     steps:
       - uses: actions/checkout@v3
 
@@ -198,10 +199,17 @@ jobs:
           cd $HOME
           tar --exclude-vcs --exclude=build --exclude=.libs -cf gap.tar.zst gap
 
+      - name: "Compute suitable artifact name suffix"
+        id: get-artifact-name
+        run: |
+          echo "artifact=${{ github.event.inputs.which-gap || inputs.which-gap }}" | sed -e 's;/;-;g'  >> $GITHUB_OUTPUT
+          echo "GITHUB_OUTPUT = $GITHUB_OUTPUT"
+          cat $GITHUB_OUTPUT
+
       - name: "Upload GAP with packages as artifact"
         uses: actions/upload-artifact@v3
         with:
-          name: gap-${{ github.event.inputs.which-gap || inputs.which-gap }}
+          name: gap-${{ steps.get-artifact-name.outputs.artifact }}
           path: /home/runner/gap.tar.zst
 
       - name: "Create jobs for matching packages"
@@ -255,7 +263,7 @@ jobs:
       - name: "Download GAP from previous job"
         uses: actions/download-artifact@v3
         with:
-          name: gap-${{ github.event.inputs.which-gap || inputs.which-gap }}
+          name: gap-${{ needs.build.outputs.artifact }}
 
       - name: "Extract GAP artifact"
         run: |
@@ -371,7 +379,7 @@ jobs:
         id: download-latest-report
         run: |
           ROOT="data/reports"
-          DIR_SYM_REL=latest-${{ github.event.inputs.which-gap || inputs.which-gap }}
+          DIR_SYM_REL=latest-${{ needs.build.outputs.artifact }}
           DIR_SYM="${ROOT}/${DIR_SYM_REL}"
           URL_SYM="https://raw.githubusercontent.com/${{ github.repository }}/${DIR_SYM}"
           # Check if file at url exists,
@@ -390,10 +398,10 @@ jobs:
 
       - name: "Generate report"
         id: report
-        run: tools/generate_report.py ${{ steps.test-status.outputs.dir-rel }} latest-${{ github.event.inputs.which-gap || inputs.which-gap }}
+        run: tools/generate_report.py ${{ steps.test-status.outputs.dir-rel }} latest-${{ needs.build.outputs.artifact }}
 
       - name: "Upload report as artifact"
         uses: actions/upload-artifact@v3
         with:
-          name: "report-${{ github.event.inputs.which-gap || inputs.which-gap }}"
+          name: "report-${{ needs.build.outputs.artifact }}"
           path: "${{ steps.test-status.outputs.dir }}"